基于SPHE微控制器的STB点歌系统几个关键技术的分析与实现
【外文题名】Analysis and Implementation of Some Key Technologies of STB VOD System Based on SPHE IC
【作者】 石学会
【外文关键词】 Set Top Box Bootloader AV Synchronization File System
【导师姓名】李朝晖
【学位名称】硕士
【学位年度】2010
【学位授予单位】暂无
【所属分类】TP368.12
【录入时间】2010-01-01
【摘要】有技术进行分析、整理,并对未来技术发展进行跟踪、预测,具有重要的现实意义。凌阳SPHE系列IC在市场上主要定位于多媒体娱乐领域,许多知名的数位产品都采用SPHE系列的IC。本人在工作中有幸参与了基于SPHE系列IC的点歌机产品开发,该项目主要开发面向台湾家庭市场的机顶盒(Set Top Box)点歌机,支持MPEG1/2、DIVX、MP3、MIDI等音视频数据播放,支持SATA硬盘／光驱、SD卡、U盘等存储设备,同时支持国语、客家语、英语、日语四种操作界面；实现了点歌单元、MP3收藏、媒体播放、影音收藏、灌录单元、系统设置等功能模块。在实际的开发工作中,本人先后分析、解决了一些技术难点,实现了多个平台功能。经过一年多努力,此款产品于2010年成功在台湾市场进行销售。本文根据在实际项目工作中遇到的技术课题展开论述,主要包含下列内容：1、首先分析影响STB点歌系统产品品质的一些细节问题,包括开发STB点歌系统会涉及哪些技术问题,以及如何在开发过程中有效控制产品品质的思路等方面；对STB点歌系统未来会使用的新技术,如高清视频、无线通讯等,进行分析、归纳；2、分析了STB点歌机系统需求,阐述了系统架构；3、设计了Bootloader的基本运行流程,并完成了其中几个关键技术的代码实现,包括EXT2/FAT32文件系统,TFTP网络协议等的实现；4、最后分析了音视频数据的处理,重点对原/伴唱切换时的AV同步控制方法进行了实现。...
【外文摘要】With the development of science and technology, the power consumption of embedded ICs becomes lower and lower but their frequencies higher and higher, functions richer and richer. In our daily life more and more embedded products can be found, especially digital products, bringing lots of conveniences and fun to us. In recent years, the market sales of embedded VOD (Voice On Demand) products have progressively exceeded traditional PC version products and embedded VOD products have become a new trend in the karaoke VOD system market. So, it has important practical significance to analyze its existing technologies and to track and predict its future.Sunplus SPHE series ICs, which mainly target in the multimedia entertainment market, have already been embedded in many well-known digital products. I’m lucky I have participated in the development of VOD products based on SPHE series ICs, during which I analyzed and solved some technical difficulties, achieved many functions of the platform.. This project mainly develops STB (Set Top Box) VOD products targeting the home market in Taiwan. The STB VOD product we developed supports video data playback of various formats like MPEG1/2, DIVX, MP3 and MIDI, various storage devices like SATA hard disk/CD, SD card and U disk, with multi-language user interface including Chinese, Hakka Chinese, English and Japanese. In terms of user interface, it includes these units:VOD unit, MP3 Favorites, Media Player, Video Favorites, Record unit, etc. With efforts of more than one year, in 2010 this product has already been on sale in Taiwan market.This document discusses technical topics encountered during the development of this product. It mainly includes the contents below:1. Analyze some details that may affect the quality of STB VOD products, in both technical and thinking respects. Collect and analyze some new technologies that may be used in STB VOD system in the future, including high definition video, wireless communication, etc.2. Analyze STB VOD product requirement specification; discuss the system architecture of the product.3. Design the basic flow of Bootloader and implement the code of several key technologies including EXT2/FAT32 file system and TFTP network protocol.4. Analyze the processing of audio and video data and give an emphasis on carrying out the control of AV synchronization when switching Original/Accompaniment....